Can anyone tell what kind of mix is my dog?

she is smallish sized about 45 lbs and pulls a sled in winter does agility comepeting in the summer so she is strong gonna be 2 in may barks like basenji but has to be common stray dog mixes someone found her and litter mates and brought em 2 the pound soo cant be any fancy breeds 2 expensive to get a blood test so please help